Re: [RFC/PATCH] cpuset: cpuset irq affinities

Peter Zijlstra
2008-03-04T11:06:41Z

On Tue, 2008-03-04 at 01:35 -0600, Paul Jackson wrote:
> Peter wrote:
> > OK, understood, I'll try and come up with yet another scheme :-)
>
> Would your per-cpuset 'irqs' file work if, unlike pids in the 'tasks' file,
> we allowed the same irq to be listed in multiple 'irqs' files?

I did think of that, but that seems rather awkward. For one, how would
you remove an irq from a cpuset?

Secondly, the beauty of the current solution is that we use
irq_desc->cs->cpus_allowed, if it were in multiple sets, we'd have to
iterate a list, and cpus_or() the bunch.